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Contract acquisition cost, amortization.

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Contract acquisition cost, impairment.

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Contract acquisition costs.

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Number of customers accounted for revenues.

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

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Amount of impairment loss for asset recognized from cost incurred to obtain or fulfill contract with customer.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

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Amount of increase (decrease) in deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Revenue Recognition - Additional Information (Details)			3 Months Ended		12 Months Ended
Revenue Recognition - Additional Information (Details)	Oct. 31, 2023	Oct. 30, 2023	Dec. 31, 2024 USD ($) Customer	Dec. 31, 2023 USD ($) Customer	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)
Disaggregation Of Revenue [Line Items]
Revenues			$ 50,896,000	$ 138,335,000
Revenue recognized			19,215,000	76,300,000
Acceleration of deferred revenue				67,800,000
Accounts receivable, net			47,671,000		$ 62,755,000	$ 61,300,000
Contract assets			16,831,000		22,219,000	56,700,000
Deferred revenue			161,070,000		167,176,000	$ 222,600,000
Contract acquisition costs			6,200,000		$ 7,100,000
Contract acquisition cost, amortization			600,000	700,000
Contract acquisition cost, impairment			0
Capitalized contract cost, amortization			2,400,000	4,100,000
Capitalized contract cost, impairment			0
China
Disaggregation Of Revenue [Line Items]
Revenues			5,400,000
2013 Acquisition
Disaggregation Of Revenue [Line Items]
Contract termination date	Dec. 31, 2023	Dec. 31, 2025
Expenses for terminating legacy contract			2,000,000
Customer One
Disaggregation Of Revenue [Line Items]
Revenues			7,400,000	$ 78,400,000
Customer Two
Disaggregation Of Revenue [Line Items]
Revenues			6,200,000
Customer Three
Disaggregation Of Revenue [Line Items]
Revenues			$ 6,000,000
Revenues \| Geographic Concentration Risk \| Minimum
Disaggregation Of Revenue [Line Items]
Percentage of revenue			10.00%
Revenues \| Customer Concentration Risk
Disaggregation Of Revenue [Line Items]
Number of customers accounted for revenues \| Customer			3	1
Revenues \| Customer Concentration Risk \| Customer One
Disaggregation Of Revenue [Line Items]
Percentage of revenue			14.50%	56.70%
Revenues \| Customer Concentration Risk \| Customer Two
Disaggregation Of Revenue [Line Items]
Percentage of revenue			12.20%
Revenues \| Customer Concentration Risk \| Customer Three
Disaggregation Of Revenue [Line Items]
Percentage of revenue			11.80%